1909. Geological Survey (U.S.). Marginal legend.; Relief shown by contours. 48 x 48 centimeters Scale 1:125,000 General Map Collection. The Survey (Washington, D.C).
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1910. Geological Survey (U.S.). Marginal legend and cross sections. "Base map compiled by the U. S. Geological Survey from U. S. Geological Survey atlas sheets, Land Office reco... U.S. Geological Survey (Washington, D.C.?).
1911. Leith, C. K. (Charles Kenneth), 1875-1956. Relief shown by contours.; "Corrected to January 1, 1911."; "Monograph LII, plate VIII"--Upper right corner. 37 x 271 centimeters Scale 1:62,500 Ge... U.S. Geological Survey (Washington, D.C).
1921. Plummer, F. B. (Frederick Byron), 1886-1947. Includes generalized columnar sections and generalized sectoin bend formation.; "Plate 1"--upper right. 132 x 75 centimeters Scale approximately 1:... University of Texas, Bureau of Economic Geology and Technology (Austin, Tex).
1909. Van Hise, Charles Richard, 1857-1918. Relief shown by contours.; Covers area from Cranberry Lake to Gogebic Lake.; "Contour interval 20 feet."; "U.S. Geological Survey." "Monograph LII,... U.S. Geological Survey (Washington, D.C).
1916. Smith, James Perrin, 1864-1931. Relief shown by hachures and spot heights.; Also shows oil fields. 146 x 119 centimeters on 2 sheets 79 x 124 centimeters Scale approximately 1:750... The Bureau (San Francisco), 1916.
1925. University of New Mexico. Black line copy. 85 x 77 centimeters Scale approximately 1:750,000; 1 inch = 12 miles. General Map Collection. The University (Albuquerque).
1910. Geological Survey (U.S.). Monograph LII Plate IV. 23 x 119 centimeters Scale 1:125,000 General Map Collection. A. Hoen & Co (Baltimore).
1925. Geological Survey (U.S.). Color chart of rock formations, with explanatory notes, in margin.; Inset: Key map of state. 89 x 117 Centimeters, sheets 102 x 75 and 102 x 77 Cen... U.S. Geological Survey (Washington).
1968. Chart of Geologic Units and Aquifers prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. ... Wallace, McHarg, Roberts and Todd.